BCM68389IFSBG

Overview

The BCM68389IFSBG is a network controller and processor integrated circuit manufactured by Broadcom Limited. It functions as an EPON/GPON FE (Fast Ethernet) processor designed for broadband access applications. The component belongs to the Communication & Networking ICs sub-category under Network Controller & Processor ICs. It carries the Broadcom / Avago trademark and is packaged in a BGA format, indicated by the suffix 'BG'. The device supports RoHS3 compliance and has a Moisture Sensitivity Level (MSL) of 1, indicating unlimited shelf life under standard conditions.

Feature Summary

• Integrated processing capability for EPON and GPON Fast Ethernet protocols
• Designed for broadband access network infrastructure applications

Applications

• EPON gateway devices
• GPON terminal units
• Broadband access network equipment

Procurement Notes

This component is officially listed as obsolete and no longer manufactured by Broadcom Limited. Availability is restricted, with current stock levels reported as limited or zero across major distributors. Verification of authenticity is critical when sourcing from secondary markets due to the end-of-life status. Engineers should confirm the specific revision and packaging integrity before integration into new designs.

Selection Notes

Designers requiring active components should consider alternative Broadcom processors within the same family that remain in production. The BCM68380 series offers similar EPON/GPON processing capabilities. Verify interface compatibility and pinout alignment when transitioning from this obsolete FE processor to newer GE or higher-speed variants to ensure PCB layout reuse.

Part Context

The BCM68389IFSBG is part of Broadcom's portfolio of communication networking integrated circuits. It sits within the broader BCM6838x series of processors dedicated to fiber-to-the-home (FTTH) architectures. This specific model targets the Fast Ethernet segment, distinguishing it from Gigabit Ethernet counterparts like the BCM68380. It represents Broadcom's historical focus on converged access solutions combining PON termination with switching functions.

Replacement Considerations

Broadcom recommends the BCM68360B1IFEBG as a manufacturer-recommended replacement for the BCM68389IFSBG. Both parts are currently listed as obsolete or having zero availability. Engineers must evaluate the functional equivalence between the FE processor and the recommended substitute, noting potential differences in port speeds or feature sets.